Details of the UCSB Spar buoy deployed during EDDIES 2004 Survey 2. Due to the cancellation of the EDDIES Tracer 1 cruise, the deployment during the Survey 1 leg was recovered prior to the end of Survey 1. During Survey 2 (oc404-4), the UCSB spar bouy was again deployed after determination of the eddy center position. The second mooring was recovered near the end of Survey 2. Calibration of instruments: SBE-39s and SBE-37 were calibrated by SeaBird. ECO-FLNTU Chl a and Optical Backscatter sensors were compared to the Oceanus CTD fluorometer during a comparison cast (oc404-4 053) during EDDIES 2004 Survey 2. Using the facory Chl a slope values, yielded Chl a values that were about twice that of the CTD fluorometer. The comparison of the extracted Chl a and Phae a samples to the CTD fluorometer also showed the CTD fluorometer to be reading too low. Therefore, the ECO-FLNTU readings of all 3 profiles were matched with corrected CTD fluorometer values rather than factory calibrated CTD fluorometer values for oc404-4 053. There was significant differences in the Chl offset count for all 3 ECO-FLNTU sensors. The ECO-FL sensor failed to log during the comparison cast, so no adjustment to the factory calibration factors could be determined for this sensor. The Optical Backscatter channel of the ECO-FLNTU was too insensitive for optimal use in these clean waters. Therefore the data is not reported in our report. Drogue Mooring details: Date GMT Latitude Longitude Launch: 26-Jul-04 1016 30 40.57 N 65 20.56 W Recovery: 4-Aug-04 2028 30 46.23 N 65 46.92 W Buoy Instruments: Depth: Sampling interval Data Recovery s/n Surface ARGOS/GPS positions every hour 82% 10 temp, pressure 1min 100% SBE39-376 40 temp 1min 100% SBE39-497 70 temp 1min 100% SBE39-499 80 temp 1min 100% SBE39-500 80 Chl fl, turbidity 4min 100% ECO-FLNTU 085 90 temp 1min 100% SBE39-501 90 Chl fl, turbidity 4min 100% ECO-FLNTU 086 100 temp, cond, pressure 1min 100% SBE37SM-406 100 Chl fl, turbidity 4min 100% ECO-FLNTU 087 110 temp 1min 100% SBE39-502 110 Chl fl 4min 100% ECO-FL 055 120-138 Holey Sock Drogue none